210220020211121 has 32 divisors (see below), whose sum is σ = 226548631420800. Its totient is φ = 194464150133760.

The previous prime is 210220020211051. The next prime is 210220020211151. The reversal of 210220020211121 is 121112020022012.

It is not a de Polignac number, because 210220020211121 - 2¹⁸ = 210220019948977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210220020211121.

It is not an unprimeable number, because it can be changed into a prime (210220020211151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498388691 + ... + 498810311.

It is an arithmetic number, because the mean of its divisors is an integer number (7079644731900).

Almost surely, 2^{210220020211121} is an apocalyptic number.

It is an amenable number.

210220020211121 is a deficient number, since it is larger than the sum of its proper divisors (16328611209679).

210220020211121 is a wasteful number, since it uses less digits than its factorization.

210220020211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424689.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210220020211121 its reverse (121112020022012), we get a palindrome (331332040233133).

The spelling of 210220020211121 in words is "two hundred ten trillion, two hundred twenty billion, twenty million, two hundred eleven thousand, one hundred twenty-one".